腱駆動機構における非線形バネの特性式誤差補償による張力制御

書誌事項

タイトル別名
  • Tension Control for Tendon Mechanisms by Compensation of Nonlinear Spring Characteristic Equation Error
  • ケンクドウ キコウ ニ オケル ヒセンケイ バネ ノ トクセイシキ ゴサ ホショウ ニ ヨル チョウリョク セイギョ

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抄録

Versatility and adherence to safety norms that are required of manipulators used in a human environment can be achieved by using tendon mechanisms that employ nonlinear springs. The nonlinear spring used in this paper is stiffness adjustable tendon (SAT), which has advantages such as it is light weight, low cost, and has a simple structure. However, precise tension control of SAT cannot be achieved by conventional methods based on a spring characteristic equation because of the SAT's hysteresis characteristics. Therefore, we propose a tension control method for nonlinear springs whose precise equation is difficult to obtain, such as SAT; this method is realized by using a disturbance observer and a reaction force observer. Experimental results validate the proposed method.

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